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Frequency Span Accuracy - Continued
Table 16. Frequency Response

Calibration Procedure For Spectrum Analyzer An/Usm-489A Page Navigation
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TB 9-6625-2250-24
MKR indication will be between 3.8 and 4.2 GHz.
(57) TI
b. Adjustments. Refer to paragraph 1 a.
17. Frequency Response
a. Performance Check
NOTE
Set the measuring receiver to measure power.
Zero and
calibrate measuring receiver sensor module.
(1) Connect equipment as shown in figure 5.
Figure 5. Frequency response - equipment setup.
(2) Press TI keys and enter values using DATA keys as listed in (a) through (g) below:
INSTRUMENT STATE PRESET.
(a)
INSTRUMENT STATE RECALL.
(b)
[MORE].
(c)
[FACTORY PRSEL PK].
(d)
FREQUENCY then [CENTER FREQ] to 300 MHz.
(e)
SPAN then [SPAN WIDTH] to 1 MHz.
(f)
AMPLITUDE then [LOG dB/DIV] to 2 dB/DIV.
(g)
(3) Set synthesized signal generator frequency to 300 MHz and level output to -5 dBm.
(4) Press MARKER PEAK SEARCH key.
(5) Set measuring receiver to measure RF power in dBm at 300 MHz.
(6) Adjust synthesized signal generator level output for a TI MKR amplitude
indication between -9.95 and -10.05 dBm.
33


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